Hi there,

I'm a researcher studying software evolution. As part of my current research, I'm studying the implications of open-sourcing a proprietary software, for instance, if the project succeed in attracting newcomers. Roslyn was in my list.

To further analyze the impacts of Roslyn’s migration, we analyzed the git log commit history of your project in terms of number of contributions, number of newcomers, and number of contributors per month. The following figure presents a temporal perspective regarding these three measures.

Given the numbers presented in the graphic, we would like to ask Roslyn developers the following questions:

1. What motivated the project to open its source code at Github? How do you evaluate the benefits of this migration?
2. Does this snapshot make sense? Did you find any inconsistency on the data?
3. Do you have any internal policy to promote/attract/retain newcomers? If so, do them succeed?
4. Why did the number of contributors increase only few months after the project became open-source?
5. Why did the newcomers rate decrease in the middle of 2015? Is there any explanation for this fact?

Thanks in advance for your collaboration,

Gustavo Pinto, PhD
http://www.gustavopinto.org